Castleton is a town in Rutland county, Vermont. It was formed in 1761 in N.H. from the following county/ies: Bennington. The probate district for Castleton is Fair Haven, while the court district is Rutland. For more information, contact the town at 556 Main St., P.O. Box 727, Castleton 05735. On the attached map, Castleton is shown as 10 in Rutland county.